Magazine for magnetic recording apparatus



Feb. 4, 1941. J. H. HEINEMAN 2,415,133

MAGAZINE FOR MAGNETIC RECORDING APPARATUS Filed July 2 8, 1945 Patented Feb. 4, 1947 MAGAZINE FOR MAGNETIC'RECOBDING APPARATUS John H. Hein'eman, Elkhart, Ind., assignor to C. G. Conn, LtlL, Elkh of Indiana art, 11111., a corporation Application July 28, 1945, Serial No. 607,603

.6 Claims. 1

This invention relates to magazines for ma netic recording apparatus and more particularly to magazines which may be detachably connected to recording or reproducing devices to carry wire.

One of the objects of the invention is to provide a magazine in which a spool carrying wire may be held in the magazine casing and closed to prevent accidental removal of the wire therefrom.

Another object is to provide a magazine in which a flexible closure strip seats on flanges on the spool to hold the spool in the casingand to prevent accidental removal or tangling of the wire. I

Still another object is to provide a magazine including cam means acting on the closure strip to move it into engagement with the spool.

A further object is to provide a magazine in which the flexible closure strip engages the spool to limit axial movement thereof in the casing.

A still further object is to provide a magazine in which opening and closing of the casing respectively causes the closure strip to move out of and into engagement with the spool.

The above and other objects and advantages of the invention will be more readily apparent magazine in open position;

Figure 2 is a section on the line 2-2 of Figure 1;

Figures 3 and 4 are views similar to Figures 1 and 2 respectively showing the magazine in closed position; and

Figure 5 is a partial view showing an alternative construction.

The magazine shown comprises an outer casing having a generally cylindrical side wall l closed at its outer end by an end plate II which may be recessed to receive a label or the like. An end disc I2 secured to the side wall I 0 closes the inner face of the casing and is provided with a central opening I3 through which a supporting and driving shaft may project. A suitable driving shaft forming a part of an apparatus with which the magazine is to be used is illustrated at I4 and is formed with an enlarged hub portion I for a purpose to appear later.

Within the casing there is loosely mounted a flanged spool l6 adapted to carry a body of magnetic wire, or the like. The spool is formed with a central opening which is adapted to fit over and engage the hub portion I5 so that the spool will be drivably connected to and supported on the shaft. When the spool is so supported, the casin is adapted to be separately mounted on the recording or reproducing apparatus so that the spool can turn freely therein without dragging against the casing. For this purpose, the end plate I2 is formed with a plurality of keyhole slots H as seen in Figure 1 which are adapted to fasten to fastening projections on the apparatus to hold the casing securely in place on the apparatus.

The casing side wall I0 is formed with an opening I8 therethrough through which wire on the spool I6 may extend to be withdrawn from or wound onto the spool. The opening I8 is adapted to be closed when the spool is not in use by a flexible closure strip I9 within the casing and which normally lies in sliding engagement with the casing sidewall I0. As best seen in Figures 1 and 3,

the closure strip is of thin resilient metal with its ends, as indicated at 2|, disconnected so that it can expand and contract radially. 'The closure strip is formed with a cut out portion which is bent outwardly to form an operating finger 22 extending through the opening I8 for easy engagement by the fingers of an operator. The bent out portion of the strip leaves an opening I .23 in the strip which is substantially coextensive with the opening I8 and which is adapted to register therewith when the magazine is: in use on an apparatus. v

The closure strip is adapted to engage and hold the spool so that the spool cannot move accidentally in the casing and so that wire cannot spring off of the spool to become tangled within the casing. For this purpose, the casing side wall II] is formed with a plurality of inwardly extending projections 24 and the strip I9 is provided with a corresponding number of recesses in the form of narrow slots 25. The slots 25 are so Spaced that when the strip is turned to the position shown in Figure 1 to bring the openings I8 and .23 into register, the slots 25 will register with the projections 24 so that the closure strip can spring out away from the spool. When the strip is turned to the position of Figure 3 to close the opening I8, the slots 25 will move out of register with the projections 24 so that the projections will cam the strip inwardly to engage with the spool flanges. In this position, the strip will frictionally hold the spool against movement in the casing and will close the space between the spool flanges so that wire cannot spring from the spool. Preferably in closing the magazine, the end of the wire is left projecting through the opening l8 so that it will be clamped against the end of i the opening by the finger 22 to hold the wire more securely in place.

To provide additional holding ability for the closure strip to hold the spool against axial movement as when it is being inserted on a shaft a series of inward projections 26 may be formed on the closure strip 1 9 to engage the inner face of the bottom flange on the spool. When the spool is forced over a shaft hub, these projections will engage the flange to hold the spool against axial movement in the casing.

Figure illustrates a modification, parts therein corresponding to like parts in Figures 1 to 4 been shown and described in detail, it will be understood that these are illustrative only and are not intended as a definition of the scope of the invention, reference being had for this purpose to the appended claims.

What is claimed is: I

1. A magazine for magnetic recording appara tus and the-like comprising a casing having a substantially cylindrical side wall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a closure strip in the casing slidable therein adjacent the side wall, the closure strip being formed with an opening to register with the opening in the casing side wall in one position, the closure strip closing the opening in the casing side wall in another position, and cooperating means on the casing and closure strip to move the closure strip into engagement with the spool when the'closure strip is moved to said other position.

2. A magazine for magnetic recording apparatus and the like comprising a casing having a substantially cylindrical side wall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a flexible closure strip in the casing sldably engaging the side wall, the closure strip being formed with an opening to register with the opening in the casing in one position and the closure strip closing the opening in the casing in another position, and cooperating cam means on the casing and closure strip to cam the closure strip inward into engagement with the spool when it is moved to said other position.

3. A magazine for magnetic recording apparatus and the like comprising a casing having a substantially cylindrical sidewall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a flexible closure strip in the casing -slidably engaging the side wall, the closure strip having a portion 4 thereof cut out and bent outward to form a fin ger extending through the opening in the casing side wall, and cooperating cam means on the easing and the closure strip to cam the strip inward into engagement with the spool when the finger is moved toward one end of the opening such as to bring a solid portion of the strip opposite the opening.

4. A magazine for magnetic recordling appa ratus and the like comprising a casing having a substantially cylindrical side wall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a. flexible closure strip in the casing slidably engaging the side wall having an opening therein to register with the opening in the side wall in one position, the closure strip closing the opening in the side wall in another position, a plurality of inwardly extending projections on the side wall, and the strip being formed with recesses to receive the projections in said one position, the recesses being out or register with the projections in said other position where-by the projections will cam the strip inward into engagement with the spool.

5. A magazine for magnetic recording apparatus and the like comprising a casing having a substantially cylindrical side wall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a flexible closure strip in the casing slidably engagin the side wall having an opening therein toregister with the opening in the side wall in one position, the closure strip closing the opening in the side wall in another position, a plurality of inwardly extending projections on the side wall, and the strip being formed with recesses to receive the projections in said one position, the recesses being out or register with the projections in said other position whereby the projections will cam the strip inward into engagement with the spool, and inwardly extendin projections on the strip to engage the spool and prevent axial movement thereof relative to the strip.

6. A magazine for magnetic recording apparatus and the like comprising a casing having a substantially cylindrical sid wall formed with an opening through which wire may pass, a spool in the casing adapted to carry a wire, a closure strip in the casing slidable therein adjacent the side wall, the closure strip being formed with an opening to register with the opening in the casing side wall in one position, the closure strip closing the opening in the casing side wall in another position, and cooperating means on the casing and closure strip to move the closure strip into engagement with the spool when the closure strip is moved to said other position, the strip having a plurality of inwardly extending projections thereon to engage the spool and prevent axial movement thereof relative to the strip when the strip is in said other position.

JOHN H. HEINEMAN. 

